#dont get people who say just a cold

I have had three respiratory tract infections this schoolyear, and each one of them has just completely knocked me out? I’ve been sick for a week now and I am finally getting better, but walking to the shop and back seriously exhausted me. And while the brain fog has lifted, there is still some left, and I’m afraid I re-sprained my rib (again) from coughing. It is like RTIs affect me more than they affect my 76-year-old mother.